have either embraced her or been indifferent to her over the past four years as they focused their energies on president obama. that clearly ended yesterday. clinton began her testimony with a rare public expression of emotion, talking about the deaths of ambassador chris stevens and three other americans in benghazi. >> for me, this is not just a matter of policy. it's personal. i stood next to president obama as the marines carried those flag-draped caskets off the plane at andrews. i put my arms around the mothers and fathers, the sisters and brothers, the sons and daughters, and the wives left alone to raise their children. >> but through most of the day, she was forceful, even combative, when she felt she needed to be, jousting with republican critics, including wisconsin senator ron johnson. >> we were misled, that there were supposedly protests and then something sprang out of that. >> with all due respect, the fact is we had four dead americans! was it because of a protest?! or was it because of guys out for a walk one night who decided they'd go kill some americans?! what differenc